- the most lateral point in the roof of the bony external auditory meatus.
Origin of porion
1905–10; < New Latin < Greek pór(os) passage, way (see pore2) + -ion diminutive suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for porion
The most familiar type of this form of apparatus is the Porion evaporator.The Manufacture of Paper
Robert Walter Sindall
- The central point on the upper margin of the external auditory meatus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.